/* ============================================================================
   Sidebar Styles - نظام الشريط الجانبي
   متوافق مع هوية نادي أدِيب
   ============================================================================ */

:root {
    --sidebar-width: 280px;
    --sidebar-collapsed-width: 70px;
    --main-blue: #274060;
    --accent-blue: #3d8fd6;
    --light-blue: #6ba8e2;
    --dark-blue: #1a2a3a;
    --sidebar-bg: linear-gradient(180deg, #274060 0%, #1a2a3a 100%);
    --sidebar-hover: rgba(61, 143, 214, 0.15);
    --sidebar-active: rgba(61, 143, 214, 0.25);
    --sidebar-shadow: 0 10px 40px rgba(39, 64, 96, 0.3);
    --transition-speed: 0.4s;
    --transition-ease: cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

/* ============================================================================
   Layout Container
   ============================================================================ */

.admin-layout {
    display: flex;
    min-height: 100vh;
    background: linear-gradient(135deg, #f8f9fa 0%, #e6f0f9 100%);
    position: relative;
}

/* ============================================================================
   Sidebar Toggle FAB (Floating Action Button)
   ============================================================================ */

.sidebar-toggle-fab {
    position: fixed;
    top: 50%;
    right: -30px;
    transform: translateY(-50%);
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, #3d8fd6 0%, #274060 100%);
    color: white;
    border: none;
    box-shadow: 0 8px 25px rgba(61, 143, 214, 0.4);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    z-index: 10;
}

.sidebar-toggle-fab:hover {
    right: -25px;
    transform: translateY(-50%) scale(1.1);
    box-shadow: 0 12px 35px rgba(61, 143, 214, 0.5);
    background: linear-gradient(135deg, #4a9ee5 0%, #2c5a7d 100%);
}

.sidebar-toggle-fab:active {
    transform: translateY(-50%) scale(0.95);
}

.sidebar-toggle-fab i {
    transition: transform 0.3s ease;
}

.sidebar-toggle-fab:hover i {
    transform: rotate(90deg);
}

/* إخفاء الزر عندما يكون الـ Sidebar مفتوح */
.admin-sidebar.active ~ .sidebar-toggle-fab {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

/* ============================================================================
   Sidebar Main Container
   ============================================================================ */

.admin-sidebar {
    position: fixed;
    right: 0;
    background: var(--sidebar-bg);
    box-shadow: var(--sidebar-shadow);
    display: flex;
    flex-direction: column;
    transition: transform var(--transition-speed) var(--transition-ease),
                width var(--transition-speed) var(--transition-ease);
    overflow: hidden;
}

/* Desktop: Sidebar أسفل Header */
@media (min-width: 1025px) {
    .admin-sidebar {
        top: calc(var(--header-height) + var(--layout-gap));
        width: var(--sidebar-width);
        height: calc(100vh - var(--header-height) - var(--layout-gap));
        z-index: var(--z-sidebar);
    }
}

/* Mobile/Tablet: Sidebar يغطي كامل الشاشة */
@media (max-width: 1024px) {
    .admin-sidebar {
        top: 0;
        width: var(--sidebar-width);
        height: 100vh;
        z-index: 1000;
    }
}

.admin-sidebar::before {
    content: "";
    position: absolute;
    top: 0;
    right: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at top right, rgba(61, 143, 214, 0.1) 0%, transparent 60%);
    pointer-events: none;
    z-index: 0;
}

.admin-sidebar::after {
    content: "";
    position: absolute;
    bottom: 0;
    right: 0;
    width: 100%;
    height: 200px;
    background: linear-gradient(to top, rgba(26, 42, 58, 0.5) 0%, transparent 100%);
    pointer-events: none;
    z-index: 0;
}

/* ============================================================================
   Sidebar Header
   ============================================================================ */

.admin-sidebar__header {
    padding: 1.5rem 1.25rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    position: relative;
    z-index: 1;
}

/* إخفاء زر الإغلاق في الشاشات الكبيرة */
@media (min-width: 1025px) {
    .admin-sidebar__header .btn--icon {
        display: none;
    }
}

.admin-sidebar__header h3 {
    color: white;
    font-size: 1.3rem;
    font-weight: 700;
    margin: 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.admin-sidebar__header h3::before {
    content: "◆";
    color: var(--accent-blue);
    font-size: 1rem;
    animation: pulse 2s ease-in-out infinite;
}

/* ============================================================================
   Navigation Menu
   ============================================================================ */

.admin-nav {
    flex: 1;
    padding: 1rem 0;
    overflow-y: auto;
    overflow-x: hidden;
    position: relative;
    z-index: 1;
}

.admin-nav::-webkit-scrollbar {
    width: 6px;
}

.admin-nav::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
}

.admin-nav::-webkit-scrollbar-thumb {
    background: rgba(61, 143, 214, 0.3);
    border-radius: 10px;
    transition: background 0.3s ease;
}

.admin-nav::-webkit-scrollbar-thumb:hover {
    background: rgba(61, 143, 214, 0.5);
}

/* Navigation Items */
.admin-nav__item {
    margin: 0.25rem 0.75rem;
    border-radius: 12px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.admin-nav__link {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.9rem 1.25rem;
    color: rgba(255, 255, 255, 0.85);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: all 0.3s var(--transition-ease);
    position: relative;
    cursor: pointer;
    border-radius: 12px;
}

.admin-nav__link::before {
    content: "";
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 0;
    background: var(--accent-blue);
    border-radius: 2px 0 0 2px;
    transition: height 0.3s var(--transition-ease);
}

.admin-nav__link:hover {
    background: var(--sidebar-hover);
    color: white;
    transform: translateX(-3px);
}

.admin-nav__link:hover::before {
    height: 70%;
}

.admin-nav__link.active {
    background: var(--sidebar-active);
    color: white;
    font-weight: 600;
    box-shadow: 0 4px 15px rgba(61, 143, 214, 0.2);
}

.admin-nav__link.active::before {
    height: 70%;
}

.admin-nav__link.active::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, transparent, rgba(61, 143, 214, 0.1));
    pointer-events: none;
}

.admin-nav__icon {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    flex-shrink: 0;
    transition: all 0.3s ease;
}

.admin-nav__link:hover .admin-nav__icon {
    transform: scale(1.15);
    color: var(--accent-blue);
}

.admin-nav__link.active .admin-nav__icon {
    color: var(--accent-blue);
    filter: drop-shadow(0 0 8px rgba(61, 143, 214, 0.5));
}

.admin-nav__text {
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.admin-nav__badge {
    background: linear-gradient(135deg, #ef4444, #dc2626);
    color: white;
    padding: 0.2rem 0.5rem;
    border-radius: 10px;
    font-size: 0.75rem;
    font-weight: 600;
    min-width: 20px;
    text-align: center;
    box-shadow: 0 2px 8px rgba(239, 68, 68, 0.3);
    animation: pulse 2s ease-in-out infinite;
}

/* Navigation Divider */
.admin-nav__divider {
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    margin: 1rem 1.5rem;
}

/* Navigation Section Title */
.admin-nav__section {
    padding: 1rem 1.25rem 0.5rem;
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-top: 0.5rem;
}

/* ============================================================================
   Nav Item Styles (Dynamic Navigation)
   ============================================================================ */

.nav-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.875rem 1.25rem;
    color: rgba(255, 255, 255, 0.85);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    border-radius: 12px;
    margin: 0.25rem 0.75rem;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    overflow: hidden;
    cursor: pointer;
}

/* Nav Item Hover Effect */
.nav-item::before {
    content: "";
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 0;
    background: linear-gradient(180deg, #3d8fd6, #6ba8e2);
    border-radius: 2px 0 0 2px;
    transition: height 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.nav-item:hover {
    background: linear-gradient(135deg, rgba(61, 143, 214, 0.2), rgba(107, 168, 226, 0.15));
    color: white;
    transform: translateX(-5px);
    box-shadow: 0 4px 15px rgba(61, 143, 214, 0.15);
}

.nav-item:hover::before {
    height: 70%;
}

/* Nav Item Active State */
.nav-item.active {
    background: linear-gradient(135deg, rgba(61, 143, 214, 0.3), rgba(107, 168, 226, 0.2));
    color: white;
    font-weight: 600;
    box-shadow: 0 4px 20px rgba(61, 143, 214, 0.25);
    transform: translateX(-5px);
}

.nav-item.active::before {
    height: 70%;
}

.nav-item.active::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, transparent, rgba(61, 143, 214, 0.1));
    pointer-events: none;
}

/* Nav Item Icon */
.nav-item i {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    flex-shrink: 0;
    transition: all 0.3s ease;
}

.nav-item:hover i {
    transform: scale(1.15) rotate(5deg);
    color: #6ba8e2;
    filter: drop-shadow(0 0 8px rgba(107, 168, 226, 0.5));
}

.nav-item.active i {
    color: #6ba8e2;
    filter: drop-shadow(0 0 10px rgba(107, 168, 226, 0.6));
    animation: iconPulse 2s ease-in-out infinite;
}

@keyframes iconPulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.1);
    }
}

/* Nav Item Text */
.nav-item span {
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* ============================================================================
   Nav Item Dropdown Styles
   ============================================================================ */

.nav-item-dropdown {
    margin: 0.25rem 0;
}

/* Dropdown Toggle (Nav Item with Dropdown) */
.nav-item-dropdown > .nav-item {
    position: relative;
}

.nav-item-dropdown > .nav-item::after {
    content: "\f078";
    font-family: "Font Awesome 6 Free";
    font-weight: 900;
    font-size: 0.75rem;
    margin-right: auto;
    transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    color: rgba(255, 255, 255, 0.6);
}

.nav-item-dropdown.open > .nav-item::after {
    transform: rotate(180deg);
    color: #6ba8e2;
}

.nav-item-dropdown.open > .nav-item {
    background: linear-gradient(135deg, rgba(61, 143, 214, 0.25), rgba(107, 168, 226, 0.18));
    color: white;
}

.nav-dropdown-menu {
    background-color: #274060;
}

/* .nav-item-dropdown.open {
    background-color: #314c6e;
} */

/* Dropdown Menu */
.nav-dropdown-menu {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275),
                opacity 0.3s ease,
                margin 0.3s ease;
    opacity: 0;
    margin: 0;
    padding: 0;
}

.nav-item-dropdown.open .nav-dropdown-menu {
    max-height: 500px;
    opacity: 1;
    margin: 0.5rem 0;
}

/* Dropdown Items */
.nav-dropdown-item {
    display: flex;
    align-items: center;
    gap: 0.875rem;
    padding: 0.75rem 1.25rem 0.75rem 3rem;
    color: rgba(255, 255, 255, 0.75);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 400;
    border-radius: 10px;
    margin: 0.25rem 0.75rem;
    transition: all 0.3s ease;
    position: relative;
    cursor: pointer;
}

.nav-dropdown-item:hover {
    background: rgba(61, 143, 214, 0.15);
    color: white;
    transform: translateX(-3px);
    padding-right: 1.5rem;
}

.nav-dropdown-item:hover::before {
    background: #6ba8e2;
    box-shadow: 0 0 10px rgba(107, 168, 226, 0.6);
    transform: translateY(-50%) scale(1.3);
}

.nav-dropdown-item.active {
    background: rgba(61, 143, 214, 0.2);
    color: white;
    font-weight: 500;
}

.nav-dropdown-item.active::before {
    background: #6ba8e2;
    box-shadow: 0 0 12px rgba(107, 168, 226, 0.8);
    transform: translateY(-50%) scale(1.5);
}

/* Dropdown Item Icon */
.nav-dropdown-item i {
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.95rem;
    flex-shrink: 0;
    transition: all 0.3s ease;
}

.nav-dropdown-item:hover i {
    color: #6ba8e2;
    transform: scale(1.1);
}

.nav-dropdown-item.active i {
    color: #6ba8e2;
}

/* Dropdown Item Text */
.nav-dropdown-item span {
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* ============================================================================
   Nested Dropdown Styles (Multi-level Navigation)
   ============================================================================ */

.nav-dropdown-item-nested {
    margin: 0.25rem 0;
}

/* Nested Dropdown Toggle */
.nav-dropdown-item-nested > .nav-dropdown-item {
    position: relative;
}

/* Nested Arrow Icon */
.nav-dropdown-item .nested-arrow {
    margin-right: auto;
    font-size: 0.7rem;
    color: rgba(255, 255, 255, 0.5);
    transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275),
                color 0.3s ease;
}

.nav-dropdown-item-nested.open > .nav-dropdown-item .nested-arrow {
    transform: rotate(-90deg);
    color: #6ba8e2;
}

.nav-dropdown-item-nested.open > .nav-dropdown-item {
    background: rgba(61, 143, 214, 0.18);
    color: white;
}

/* Nested Menu Container */
.nav-nested-menu {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275),
                opacity 0.3s ease,
                margin 0.3s ease;
    opacity: 0;
    margin: 0;
    padding: 0;
    background: rgba(0, 0, 0, 0.15);
    border-radius: 0 8px 8px 0;
}

.nav-dropdown-item-nested.open .nav-nested-menu {
    max-height: 400px;
    opacity: 1;
    margin: 0.75rem;
    border-radius: 10px;
}

/* ============================================================================
   Nested Items (Third Level)
   ============================================================================ */

.nav-nested-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.65rem;
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 400;
    border-radius: 8px;
    margin: 0.5rem;
    transition: all 0.3s ease;
    position: relative;
    cursor: pointer;
}

/* Nested Item Indicator Line */

.nav-nested-item::after {
    content: "";
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 0;
    background: linear-gradient(180deg, #6ba8e2, #3d8fd6);
    border-radius: 2px 0 0 2px;
    transition: height 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.nav-nested-item:hover {
    background: rgba(61, 143, 214, 0.12);
    color: white;
    transform: translateX(-2px);
    padding-right: 1.2rem;
}

.nav-nested-item:hover::before {
    width: 12px;
    background: #6ba8e2;
    box-shadow: 0 0 8px rgba(107, 168, 226, 0.5);
}

.nav-nested-item:hover::after {
    height: 60%;
}

.nav-nested-item.active {
    background: rgba(61, 143, 214, 0.18);
    color: white;
    font-weight: 500;
}

.nav-nested-item.active::before {
    width: 14px;
    background: #6ba8e2;
    box-shadow: 0 0 10px rgba(107, 168, 226, 0.7);
}

.nav-nested-item.active::after {
    height: 60%;
}

/* Nested Item Icon */
.nav-nested-item i {
    width: 18px;
    height: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    flex-shrink: 0;
    transition: all 0.3s ease;
    opacity: 0.8;
}

.nav-nested-item:hover i {
    color: #6ba8e2;
    transform: scale(1.15);
    opacity: 1;
}

.nav-nested-item.active i {
    color: #6ba8e2;
    opacity: 1;
    animation: nestedIconGlow 2s ease-in-out infinite;
}

@keyframes nestedIconGlow {
    0%, 100% {
        filter: drop-shadow(0 0 4px rgba(107, 168, 226, 0.4));
    }
    50% {
        filter: drop-shadow(0 0 8px rgba(107, 168, 226, 0.7));
    }
}

/* Nested Item Text */
.nav-nested-item span {
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* ============================================================================
   Sidebar Footer
   ============================================================================ */

.admin-sidebar__footer {
    padding: 1.25rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    background: rgba(0, 0, 0, 0.2);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    position: relative;
    z-index: 1;
}

/* ============================================================================
   Main Content Area
   ============================================================================ */

.admin-main {
    flex: 1;
    margin-right: var(--sidebar-width);
    padding: 2rem;
    transition: margin-right var(--transition-speed) var(--transition-ease);
    min-height: 100vh;
}

/* ============================================================================
   Mobile Sidebar Toggle
   ============================================================================ */

.admin-sidebar.collapsed {
    transform: translateX(100%);
}

/* Sidebar Backdrop for Mobile */
.sidebar-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.sidebar-backdrop.active {
    opacity: 1;
    visibility: visible;
}

/* ============================================================================
   Responsive Design
   ============================================================================ */

@media (max-width: 1024px) {
    .admin-sidebar {
        transform: translateX(100%);
    }

    .admin-sidebar.active {
        transform: translateX(0);
    }

    .admin-main {
        margin-right: 0;
    }
}

@media (max-width: 768px) {
    .admin-sidebar {
        width: 100%;
        max-width: 320px;
    }

    .admin-main {
        padding: 1.5rem;
    }

    .admin-sidebar__header h3 {
        font-size: 1.1rem;
    }

    .admin-nav__link {
        padding: 0.8rem 1rem;
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    .admin-sidebar {
        max-width: 100%;
    }

    .admin-main {
        padding: 1rem;
    }

    .admin-sidebar__footer {
        padding: 1rem;
    }

    .admin-nav__link {
        padding: 0.75rem 0.9rem;
    }
}

/* ============================================================================
   Animations
   ============================================================================ */

@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.7;
        transform: scale(0.95);
    }
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

/* ============================================================================
   Collapsed State (Optional - للاستخدام المستقبلي)
   ============================================================================ */

.admin-sidebar.mini {
    width: var(--sidebar-collapsed-width);
}

.admin-sidebar.mini .admin-sidebar__header h3,
.admin-sidebar.mini .admin-nav__text,
.admin-sidebar.mini .admin-nav__badge,
.admin-sidebar.mini .admin-nav__section {
    opacity: 0;
    visibility: hidden;
}

.admin-sidebar.mini .admin-nav__link {
    justify-content: center;
    padding: 0.9rem;
}

.admin-sidebar.mini .admin-main {
    margin-right: var(--sidebar-collapsed-width);
}

/* ============================================================================
   Accessibility & Focus States
   ============================================================================ */

.admin-nav__link:focus-visible {
    outline: 2px solid var(--accent-blue);
    outline-offset: 2px;
    background: var(--sidebar-hover);
}

/* ============================================================================
   Print Styles
   ============================================================================ */

@media print {
    .admin-sidebar,
    .sidebar-backdrop {
        display: none;
    }

    .admin-main {
        margin-right: 0;
    }
}

/* ============================================================================
   Dark Mode Support (Optional)
   ============================================================================ */

@media (prefers-color-scheme: dark) {
    .admin-layout {
        background: linear-gradient(135deg, #1a1a1a 0%, #0f1419 100%);
    }
}

/* ============================================================================
   Smooth Transitions for All Interactive Elements
   ============================================================================ */

.admin-sidebar *,
.admin-nav__link {
    transition-timing-function: var(--transition-ease);
}

/* ============================================================================
   Loading State
   ============================================================================ */

.admin-nav__link.loading {
    pointer-events: none;
    opacity: 0.6;
}

.admin-nav__link.loading .admin-nav__icon {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}